x86: debug key prints memory node info of each domain

This patch will collect memory location (the domain has how many pages
in different node) of each domain and display if you input debug key.

Signed-off-by: Zhou Ting <ting.g.zhou@intel.com>

diff --git a/xen/arch/x86/numa.c b/xen/arch/x86/numa.c
index ab3050b3e60e8e85fc7083fb2a6732fab18a1049..0debd987bccde62a90420e88b319c4102d7a3858 100644 (file)
--- a/xen/arch/x86/numa.c
+++ b/xen/arch/x86/numa.c
@@ -14,6 +14,7 @@
 #include <xen/time.h>
 #include <xen/smp.h>
 #include <asm/acpi.h>
+#include <xen/sched.h>
 
 static int numa_setup(char *s);
 custom_param("numa", numa_setup);
@@ -281,6 +282,9 @@ static void dump_numa(unsigned char key)
 {
        s_time_t now = NOW();
        int i;
+       struct domain *d;
+       struct page_info *page;
+       unsigned int page_num_node[MAX_NUMNODES];
 
        printk("'%c' pressed -> dumping numa info (now-0x%X:%08X)\n", key,
                  (u32)(now>>32), (u32)now);
@@ -297,6 +301,28 @@ static void dump_numa(unsigned char key)
        }
        for_each_online_cpu(i)
                printk("CPU%d -> NODE%d\n", i, cpu_to_node[i]);
+
+       rcu_read_lock(&domlist_read_lock);
+
+       printk("Memory location of each domain:\n");
+       for_each_domain(d)
+       {
+               printk("Domain %u (total: %u):\n", d->domain_id, d->tot_pages);
+
+               for_each_online_node(i)
+                       page_num_node[i] = 0;
+
+               list_for_each_entry(page, &d->page_list, list)
+               {
+                       i = phys_to_nid(page_to_mfn(page) << PAGE_SHIFT);
+                       page_num_node[i]++;
+               }
+
+               for_each_online_node(i)
+                       printk("    Node %u: %u\n", i, page_num_node[i]);
+       }
+
+       rcu_read_unlock(&domlist_read_lock);
 }
 
 static __init int register_numa_trigger(void)